Carburetor



Jan. 17, 1933-. E. c. BERGMAN CARBURETOR Filed Dec. 1. 1931 INVENTOR ATTOR N EY Patented Jan. 17, 1933 UNETE STATES PATENT QFFICE ERNEST C. IBERGMAN', OF YORK, NEBRASKA, ASSIGNGR OF ONE-HALF TO ANNA H. BEBGIYIAN, AND ONE-HALF T CHARLES F. STIJOMAN, BOTH 0F YORK, NEBRASKA CARBURETOB Application filed December 1, 1931. Serial No. 578,355.

This invention relates to an attachment for an internal combustion engine employing an auxiliary air mixing device between the carburetor and the intake manifold thereof and has for the primary object, the provision of means whereby the starting of an engine may be made comparatively easy and quick in cold weather to relieve undue work on the starter and strain on the battery and obviates the possibility of flooding the carburetor and rendering the engine difficult to start.

With this and other objects in view, this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawing, in which Figure 1 is a fragmentary side elevation of an internal combustion engine having an intake manifold and carburetor equipped with an attachment constructed in accordance with my invention.

Figure 2 is a sectional view taken on the line 2-2 of Figure 1.

Figure 3 is a similar view taken on the line 33 of Figure 1.

Figure 4 is a sectional view taken on the line 4:4: of Figure 2.

Figure 5 is a similar view taken on the line 5-5 of Figure 2.

Figure 6 is a fragmentary sectional view taken on the line 66 of Figure 2.

Referring in detail to the drawing, the numeral 1 indicates a fragmentary portion of an internal combustion engine having an intake manifold 2 and a carburetor 3 and to provide a better vaporization of the fuel entering the engine, an auxiliary air miner i is positioned between the throat 5 of the carburetor and the intake manifold 2 and has formed centrally thereof a slightly tapered sleeve 6 through which the fuel from the carburetor must pass when entering the intake manifold. The body portion of the air mixer is provided with a series of angularly disposed air passages 7 adapted to direct air against the outer face of the sleeve 6 and and quick in cold weather, my attachment is provided.

The attachment consists of a casing 8 adapted to be positioned between the intake manifold 2 and the throat 5 of the carburetor with the air mixing device 4 located therein. The casing 8 provides a chamber 9 of a size considerably larger than the exterior dimensions of the air mixer 4 and is provided with an air intake nipple 10 whereby air may enter the chamber 9 for passing into the intake manifold by way of the air passages 7. A strainer 11 is located within the nipple 10 to collect foreign matter and prevent the same from entering the device and the explosion chambers of the engine. A resilient arm 12 is mounted on the casing 8 and carries a cupshaped valve element 13 provided with a suitable gasket 14. The normal position of the arm 12 is to space the gasket 14 from the upper end of the air nozzle 10 so that air may pass into the casing.

A lever 15 is pivoted to the casing and has one end pivotally connected to the free end of the flexible arm 12 for the purpose of flexing said arm to bring the gasket 14 of the valve element 13 into engagement with the air nipple 10 for the purpose of cutting off the auxiliary supply of air to the intake manifold. The lever may berocked on its pivot by a control means 16 extending to the inst-rumentboard of the vehicle. With the air nipple 1O closed by the valve element 13, the starting of the engine will be rendered comparatively easy.

A priming nipple 17 is in communication with the casing and is provided with astrainer 18 and may be connected to a suit-able primer (not shown) or may be normally closed by a removable plug 19. The priming nipple 17 is adapted to permit gasoline or like fuel to be introduced into the casing 9 and due to the suction of the engine when started, this fuel Will be drawn into the explosion chambers and immediately ignited so as to render the starting of the engine comparatively quick and easy in cold weather or when standing 10 idle for a long length of time.

As before stated the fuel may be introduced into the priming nipple by any well known type of primer now in use or a person may inject fuel therein by employing an oil can or the like after the removal of the plug While I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the spirit and scope of my invention, as claimed.

Having thus described my invention, what 26 I claim is:

An attachment for auxiliary air mixing devices comprising a casing enclosing an auxiliary air mixing device and having walls thereof spaced from the inlet openings of the 30 mixing device, an air intake nipple in communication with the interior of the casing and carried by the latter, a resilient arm having one end secured to the casing and extending I across the nipple, a cup-shaped valve element carried by the arm and disposed over and normally spaced from the inlet end of the nipple, and an operating medium connected to the free end of the arm for flexing the latter to bring the valve element into engage- 4 ment with the nipple for closing the interior of the casing to the atmosphere.

In testimony whereof I afiix my signature.

ERNEST C. BERGMAN. 

